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Tugor pressure. Tugor pressure is caused by the cell's vacuole filling up with water and pressing against the outside of the cell.
Isnt turgor pressure occurring in a turgid cell? =/
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∙ 12y ago
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What is a plasmolysed cell?
A plasmolysed cell is where the cell membrane has pulled away from the cell wall, resulting in the collapse of the cell. This usually occurs because the cell has been placed in a solution with a concentration of water lower then that inside the cell so the water has diffused through the semi-permeable membrane of the cell into the solution and the cell shrivels because it has no water.
What is present and absent in plant and animal cell?
A cell wall, chloroplast and large vacuole are present in plant cell. Whereas, Golgi body and grana are present in animal cell. A cell wall is absent in animal cells and Golgi Bodies are absent in plant cells.
Why is the cell membrane still attached to the cell wall at some point when the cell is plasmolysed?
Cellulose microfibrils extending from strands of the Hechtian reticulum and entwining into the cell wall matrix act as anchors for the plasma membrane as it moves away from the wall during plasmolysis.
What happens to a plant cell in a salt solution?
Plant cells always have a strong cell wall surrounding them. When they take up water by osmosis they start to swell, but the cell wall prevents them from bursting. Plant cells become "turgid" when they are put in dilute solutions. Turgid means swollen and hard. The pressure inside the cell rises, eventually the internal pressure of the cell is so high that no more water can enter the cell. This liquid or hydrostatic pressure works against osmosis. Turgidity is very important to plants because this is what make the green parts of the plant "stand up" into the sunlight. When plant cells are placed in concentrated sugar/salt solutions they lose water by osmosis and they become "flaccid"; this is the exact opposite of "turgid". If you put plant cells into concentrated sugar solutions and look at them under a microscope you would see that the contents of the cells have shrunk and pulled away from the cell wall: they are said to be plasmolysed. When plant cells are placed in a solution which has exactly the same osmotic strength as the cells they are in a state between turgidity and flaccidity. We call this incipient plasmolysis. "Incipient" means "about to be".
What do plant cells have animal cells dont?
chloroplast and cell wall and a LARGE vacoule
What would a blood cell do if it went into a salt solution?
It will get plasmolysed.
Do cells reccover from the state of plasmolysis?
Yes, if a plasmolysed cell is placed in a hypotonic solution it can recover as a turgid cell.
What does a plant cell look like when it is plasmolysed?
externally the cell looks the same as the cell wall is rigid, internally the cell membrane pulls away from the cell wall
What is the meaning of plasmolysed cell?
Plasmolysis is when a plant cell looses so much water (via osmosis) so the cell membrane begins to "peel away" from the cell wall :)
What is a plasmolysed cell?
A plasmolysed cell is where the cell membrane has pulled away from the cell wall, resulting in the collapse of the cell. This usually occurs because the cell has been placed in a solution with a concentration of water lower then that inside the cell so the water has diffused through the semi-permeable membrane of the cell into the solution and the cell shrivels because it has no water.
What characteristic of a plant cell is absent in an animal cell?
a cell wall is absent in a plant cell and cell sap is also not there in animal cell ,starch grains
Is chlorophyll present in a plant cell but absent in an animal cell?
yes it is present in a plant cell but absent in an animal cel
IS th cell nucleus present or absent in Monera?
It is absent.
What is present and absent in plant and animal cell?
A cell wall, chloroplast and large vacuole are present in plant cell. Whereas, Golgi body and grana are present in animal cell. A cell wall is absent in animal cells and Golgi Bodies are absent in plant cells.
What is absent in a bacterial cell?
a true nucleus.
What organelle is absent in plant cell?
microtubules
Why is the cell membrane still attached to the cell wall at some point when the cell is plasmolysed?
Cellulose microfibrils extending from strands of the Hechtian reticulum and entwining into the cell wall matrix act as anchors for the plasma membrane as it moves away from the wall during plasmolysis.
